package cn.edu.xmu.wnw.dao.impl;

// default package

import java.util.List;

import org.hibernate.LockMode;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import cn.edu.xmu.wnw.dao.FriendCategoryDAO;
import cn.edu.xmu.wnw.pojo.FriendCategory;

/**
 * A data access object (DAO) providing persistence and search support for
 * FriendCategory entities. Transaction control of the save(), update() and
 * delete() operations can directly support Spring container-managed
 * transactions or they can be augmented to handle user-managed Spring
 * transactions. Each of these methods provides additional information for how
 * to configure it for the desired type of transaction control.
 * 
 * @see .FriendCategory
 * @author MyEclipse Persistence Tools
 */

public class FriendCategoryDAOImpl extends HibernateDaoSupport implements
		FriendCategoryDAO
{
	private static final Logger log = LoggerFactory
			.getLogger(FriendCategoryDAOImpl.class);
	// property constants
	public static final String NAME = "name";

	public void initDao()
	{
		// do nothing
	}

	public void save(FriendCategory transientInstance)
	{
		log.debug("saving FriendCategory instance");
		try
		{
			getHibernateTemplate().save(transientInstance);
			log.debug("save successful");
		}
		catch (RuntimeException re)
		{
			log.error("save failed", re);
			throw re;
		}
	}

	public void delete(FriendCategory persistentInstance)
	{
		log.debug("deleting FriendCategory instance");
		try
		{
			getHibernateTemplate().delete(persistentInstance);
			log.debug("delete successful");
		}
		catch (RuntimeException re)
		{
			log.error("delete failed", re);
			throw re;
		}
	}

	public FriendCategory findById(java.lang.Integer id)
	{
		log.debug("getting FriendCategory instance with id: " + id);
		try
		{
			FriendCategory instance = (FriendCategory) getHibernateTemplate()
					.get("FriendCategory", id);
			return instance;
		}
		catch (RuntimeException re)
		{
			log.error("get failed", re);
			throw re;
		}
	}

	public List findByExample(FriendCategory instance)
	{
		log.debug("finding FriendCategory instance by example");
		try
		{
			List results = getHibernateTemplate().findByExample(instance);
			log.debug("find by example successful, result size: "
					+ results.size());
			return results;
		}
		catch (RuntimeException re)
		{
			log.error("find by example failed", re);
			throw re;
		}
	}

	public List findByProperty(String propertyName, Object value)
	{
		log.debug("finding FriendCategory instance with property: "
				+ propertyName + ", value: " + value);
		try
		{
			String queryString = "from FriendCategory as model where model."
					+ propertyName + "= ?";
			return getHibernateTemplate().find(queryString, value);
		}
		catch (RuntimeException re)
		{
			log.error("find by property name failed", re);
			throw re;
		}
	}

	public List findByName(Object name)
	{
		return findByProperty(NAME, name);
	}

	public List findAll()
	{
		log.debug("finding all FriendCategory instances");
		try
		{
			String queryString = "from FriendCategory";
			return getHibernateTemplate().find(queryString);
		}
		catch (RuntimeException re)
		{
			log.error("find all failed", re);
			throw re;
		}
	}

	public FriendCategory merge(FriendCategory detachedInstance)
	{
		log.debug("merging FriendCategory instance");
		try
		{
			FriendCategory result = (FriendCategory) getHibernateTemplate()
					.merge(detachedInstance);
			log.debug("merge successful");
			return result;
		}
		catch (RuntimeException re)
		{
			log.error("merge failed", re);
			throw re;
		}
	}

	public void attachDirty(FriendCategory instance)
	{
		log.debug("attaching dirty FriendCategory instance");
		try
		{
			getHibernateTemplate().saveOrUpdate(instance);
			log.debug("attach successful");
		}
		catch (RuntimeException re)
		{
			log.error("attach failed", re);
			throw re;
		}
	}

	public void attachClean(FriendCategory instance)
	{
		log.debug("attaching clean FriendCategory instance");
		try
		{
			getHibernateTemplate().lock(instance, LockMode.NONE);
			log.debug("attach successful");
		}
		catch (RuntimeException re)
		{
			log.error("attach failed", re);
			throw re;
		}
	}

	public FriendCategoryDAOImpl getFromApplicationContext(
			ApplicationContext ctx)
	{
		return (FriendCategoryDAOImpl) ctx.getBean("FriendCategoryDAO");
	}
}